PowertrainP0041

Caution

Severity: Caution - get it checked when you can

O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2

29 brands affected · Generic SAE J2012 description.

Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · Bank 1: the side of the engine containing cylinder 1 · Bank 2: the side of the engine containing cylinder 2 · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

This code is in the fuel and air metering range, which includes fuel-pressure and camshaft-timing faults.

2Common causes

Dirty or faulty mass air flow sensor
Vacuum or intake air leak
Weak fuel pump or clogged fuel filter
Faulty fuel injector
Faulty oxygen sensor
Wiring or connector fault

3Can I drive?

Caution · drive with care

Have it diagnosed promptly. Some codes in this range affect fuel pressure or camshaft timing; if the engine loses power, runs badly, or stalls, stop safely and get professional help.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 29

Brand	Code	Description	System
Ashok Leyland CV	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2 SAE	Powertrain
BAIC Motor	P0041	Drive motor resolver fault Brand	Powertrain
Mercedes-Benz	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2 SAE	Powertrain
BYD	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2 Brand	Powertrain
Chery	P0041	SAE: oxygen sensor Signals Swapped: B1-S2 B2-S2 Brand	Powertrain
Daewoo	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2 Brand	Powertrain
DFFS	P0041	Sequential solenoid coil 2 output fault Brand	Powertrain
DFFX	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2 Brand	Powertrain
DFXK	P0041	SAE: Oxygen Sensor Signals Swapped: B1-S2 B2-S2 Brand	Powertrain
EOBD	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2 SAE	Powertrain
Geely	P0041	SAE: Oxygen Sensor Signals Swapped: B1-S2 B2-S2 Brand	Powertrain
GM	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2 Brand	Powertrain
Great Wall	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2 Brand	Powertrain
Hafei	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2 Brand	Powertrain
Holden	P0041	HO2S Signals Swapped Banks 1 and 2 Sensor 2 Brand	Powertrain
Honda	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2 SAE	Powertrain
Hyundai	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2 SAE	Powertrain
Isuzu	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2 SAE	Powertrain
Land Rover	P0041	Heated oxygen sensor 1-2 Signal swapped to 2-2 Brand	Powertrain
Maserati	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2 SAE	Powertrain
Opel	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2 Brand	Powertrain
Peugeot	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2 SAE	Powertrain
Porsche	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2 SAE	Powertrain
Saab	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2 Brand	Powertrain
MG (SAIC)	P0041	Squib or satellite Configuration Error Brand	Powertrain
Tata	P0041	O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2 Brand	Powertrain
Toyota	P0041	Sequential solenoid coil 2 output fault Brand	Powertrain
Volvo	P0041	Downstream HO2S Sensors Swapped Brand	Powertrain
Volkswagen	P0041	Oxygen (Lambda) sensor signals swapped: B1-S2 / B2-S2; Lower limit exceeded Brand	Powertrain

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Extended variant codes 1

These 7-character codes are manufacturer-specific variants of P0041 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P004100	Oxygen sensors 2 (cylinder banks 1 and 2) have been swapped. Brand	Powertrain

6Related codes

Browse Pxxx codes or P004xx codes.